King Protea, Giant Protea
Protea cynaroides

Family: Proteaceae (pro-tee-AY-see-ee) (Info)
Genus: Protea (PROH-tee-uh) (Info)
Species: cynaroides (sin-nar-OY-deez) (Info) (sin-ar-OY-deez) (Info)

Category:

Tropicals and Tender Perennials

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

Flowers are good for cutting

Flowers are good for drying and preserving

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us

Height:

12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

24-36 in. (60-90 cm)

36-48 in. (90-120 cm)

4-6 ft. (1.2-1.8 m)

6-8 ft. (1.8-2.4 m)

Spacing:

4-6 ft. (1.2-1.8 m)

6-8 ft. (1.8-2.4 m)

Hardiness:

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

USDA Zone 11: above 4.5 C (40 F)

Sun Exposure:

Full Sun

Danger:

Unknown - Tell us

Bloom Color:

Pink

Red

Bloom Time:

Mid Spring

Late Spring/Early Summer

Mid Summer

Foliage:

Evergreen

Smooth-Textured

Other details:

Unknown - Tell us

Soil pH requirements:

5.1 to 5.5 (strongly acidic)

5.6 to 6.0 (acidic)

Patent Information:

Unknown - Tell us

Propagation Methods:

From softwood cuttings

Seed Collecting:

Allow seedheads to dry on plants; remove and collect seeds

Regional

This plant has been said to grow in the following regions:

Aliso Viejo, California

Hayward, California

Hidden Meadows, California

Manhattan Beach, California

Mission Viejo, California

San Leandro, California

Vista, California

Boca Raton, Florida

Vero Beach, Florida

show all

Gardeners' Notes:

0
positives
2
neutrals
0
negatives
RatingContent
Neutral

On Oct 24, 2007, htop from San Antonio, TX (Zone 8b) wrote:

I have not grown this plant.

The king protea is the national flower of South Africa and is commercially grown in Australia and Hawaii. Bracts vary in color. Naturally occuring hybrids may have bracts that are silvery pink, deep clear pink or sometimes a deep crimson. When cut, the blooms last for weeks. When visiting Maui, I bought four buds from 2 nice young men on the side of the road while traveling to Hana for 50 cents each. They were not fully open when I had to leave after an 8 day visit. Too bad I could not bring them with me ... they cost a fortune here.

Neutral

On Oct 9, 2006, Kell from Northern California, CA (Zone 9b) wrote:

Protea cynaroides have flower heads that have the flowers in the center with colorful bracts surrounding them. The flowerheads vary in size from 5 inches to 12 inches. The colorful outside bracts vary in color from creamy white to a deep pink, though the paler pinks with a silver sheen are the most sought after. This is a woody shrub which grows to about 6 feet that has thick stems and large shiny green leaves.

The flowerheads are prized as a cut flower and add lots of drama to a bouquet.